ACURA

B18100D

Manufacturer communications

Publication date: 2018-10-16
Received by NHTSA: 2018-10-29
NHTSA record numbers: 10146073

Manufacturer summary

Original wording in English

Servicenews article - Is the MIL on with DTC P2271 (secondary HO2S [sensor 2] circuit signal stuck rich)? What's likely causing this is the PCM is misinterpreting the A/F sensor (sensor 1) signals, causing the PCM to think that sensor 2 is stuck rich.

NHTSA manufacturer communications ↗

Reported code forms

P2271

Manufacturer wording

Source wording can vary by vehicle and suffix. It is shown as written, not as a universal diagnosis.

AcuraP2271

secondary HO2S [sensor 2] circuit signal stuck rich

NHTSA 10142451 · NHTSA 10146073

Check vehicle applicability

A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.

Make	Model	Model year
Acura	TSX	2008
Acura	TSX	2007

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